Typewriting machine



Sept. 9 1924.

#una July 27. 1920 Patented Sept. 9, 1924.

isoaoii trice.

OOBJNELIUS B. 'CORCORADL 0l? NEW YQRK, N. Y., .tSSIG'NOR` T0'U'NID'EBT-WTO0]),'"JYLE-vA WRITER COMPANY, OIF NEW' YORK, N. Y., ACORPORATION OF: DELAWARE..

TYPEVRITING IVIACHINE.

`applicati@ mea any 27, ieee(l serial No'. 399,353.

To @ZZ whom t may concern.'

Be it known that I, CORNELIUS- B. Con# Conan', a citizen of the UnitedStates, residing in borough of the Bronx, in the county of the Bronx,city and State ofy New York, have invented certain new and usefulImprovements inv Typewriting li/Iag chines, of which the following is aspecilication.

This invention relates to line-spacing mechanism, and more particularlyto linespacing mechanism such as is used on the Underwood typewriter,and' the invention has for its object suchimprovement in theconstruction of these devicesthat the shock of operation of the partsused in linewspacing is less, resulting` in less wear and greaterfreedom from noise.

A feature of the invention relates to the provision of means whereby theline-space lever is given a movement at each stroke, whether for one,two or three line-spaces, just sufiicient to properly line-space theplaten, and, for this purpose, mea-ns are provided to arrest theyline-space lever in various normalpositions, said lever moving from anyone of these positions to a definite position, such movementscorresponding to the movements of the line-space mechanism for effectingone, two 'or three line-space movements of the platen.

Anotherv feature of the invention relates to the provision of means forcontrolling the line-spacing slide and pawl, wherebyk they partake ofmovements in accorda-nce with the setting ofthe line-space lever.

A stillv further feature of my invention relates to the provision foravoiding frictional 'contact between the line-space slide and theli.nespacelever duringlcase-sliifting movements of the platen, and thereis provided for this purpose a clearance between the line-space slideand the line-space lever., said vclearance being maintained when thevline-space lever is adjusted so as to be `arrested in anyi'one of aplurality of normal positionsi Other features'and advantages willhereinafter appear;

In the accompanying drawings, f

Figure l is a Itop 'planview of the leftliand portion of' an Underwoodtypewriter, showing the line-'space lever and cooperatinline-spacemechanism, set for single line 'space movements.

Figure 2 isa front elevation of the"saniiel Figure 3 is an end view oftheparts'f'in position for single-space'movements ofthe line-spacingmechanism.

Figure 4; is a somewhat similar view, withy parts omitted and with theline-sp `aceV meehanism set for a t-wo-space movement of the platen.

Figure 5 is a view of thel end opposite to Figure 3, showing some ofthe' parts Referring to thedrawings, l, indicatesa platen, having aspindle 2, by which theA platen may be rotated in the platen-frame 3,such rotation being effected by means of a ratchet 4, secured to thespindle 'and adapted to he actuatedl one, two or three spaces by a pawl5, pivoted to a linefspace` or pawl-carrier slide 6L The platen may berotated, as usual', by hand,` by meansv of a knurled knob' 7. The slide6' unconnected with but is vin the path of" moveN ment of and adaptedtol be engaged and operated by a toe or pawl 8 of a line-Spee@ lever orfinger-piece 9, thefinger-piece,loeing more particularly formed by aforwardly-eXte-nding lever-arm of the line-'space` lever 9, saidlinespace lever being pivoted at l0 in the carriage-frame l1.

The construction so far described'is similar to that usually found inUnderwood' typewriters, and, with such construction, the line-spacelever always has the same amount ofV motion ywhether operating Vf r'orfone, two or three ,stepsl Ofline-space mover" ment. l l

In the present construction, I provide means whereby the line-spacelever list. `limited in its movement, depending upon the amount 4ofmovement itis desired to give lto the line-space pawl, Said lever, inits forward movement, is arrestedby a shoulder l2, carriedby thecarriage-frame, but is limited in its return movement, according towhether one, two or three steps. of line-space movement are desired. Forthis purpose, I provide a settable stop-de-` vice comprising a shaft 18,suitably7 mount-V y ed in ears 14, struck up from a plate 15,`v` screwedtothe carriage frame, said shaftl 13 carrying stop-pins 16, mountedradially about the shaft in angular-ly spaced `relation and so spacedfrom each other, longitudinally of the shaft, that the line-Space leverwill be arrested in different positions, acf. cording to the rotationalposition the shaft occupiesB For readily determining the set-- ting ofthe shaft, an index 16a, shown as formed on the lett-hand ear 14, isprovided, the shaft having a pointer 17 co-operating therewith. Toconveniently maintain the shaft in its diiterent set positions, ahousing 18 is provided on the shaft 13, outside of one of the ears 14,shown as the ear at the right, said housing having a spring pressed ball18a engaging seats 18 in the said ear, and shown in Figure and at theright. in Figures 1 and rl'he shaft is rotated by a lnurled knob 19,secured to its opposite end.

A pair of stop-pins 19a (Figures 1 and 5) on the right-hand ear 141 areengageable by the housing 18 to limit the rotative movement of thepin-carrying shaft 13.

, In order that the line-space pawl may operate its ratchet differentdegrees, the slide 6 carries a pin 2O at its lett-hand end, Figure 3, towhich is secured a spring 21, the opposite end ot said spring beingattached to a pin 22, carried by the platentrame. rlhe spring 21 tendsto urge the slide 6 to the right, Figure 8, and towards the toe or pawl8 of the line-space lever 9, and. to limit the movement ot the slideunder action ot' this spring, a settable stopdevice is providedcomprising a setting lever 23 having a lip 211 extending in trout ot apin 25, carried by the slide 6. rlhe lever 23 is also connected by apin-and-slot connection with a pawl-setting slide 26, which. slidecarries a shelf 27. The pawl 5 has a portion 28 at one side thereot andwhich extends rearwardly and downwardly, and normally is seated on theshelt 27 when the pawl is in normal position. lith the parts positionedas shown in Figures 1, 2 and 3, movement of the line-space lever willresult in engaging and moving rearwardly the slide 6, and, as soon asthe portion 28 oli' the pawl drops ott ot the shelf 27, the pawl 5 willengage the ratchet 4i and more said ratchet until the parts are arrestedby the lever 9 striking the shoulder 12, imparting a singlespacemovement to the atchet and platen. it a two-space movement ot theratchet is desired, the lever 23 is moved to the position shown inFigure 1, carrying with it the slide 26, together with the shelt 27, andalso, by reason ot the tact that the spring 2l is urging the slide 6torwardly, pressing the pin 25 on the slide against the lip 24 on thelever, said slide will follow up the lever 23 as it is moved from the position shown in Figure 3 to that shown in Figure 4l, so that the slidewill have a ditferent` normal position from that occupied in vthe Figure3 position. lilith the parts thus positioned as in Figure ll, movementot the line-space lever will cause the pawl to acuate the ratchet twospaces, it, oit course, being understood that the shatt 1?; has beenrotated to position the second pin 16 to con tact with the line-spacelever, so that it moves from a differentnormal position from thatoccupied in Figure 1, and from the position there indicated in dottedlines. it will be noted, in Figure L1, that the pawl 5 drops intoengagement with the ratchet after a slight lost motion ot the slide, butthat this lost motion is the same whether 'the parte are positioned"yfor one, two or three linespace movements, the amount ot' movement ofthe pawl depending upon the setting ot the lever 23 and the shaft 13.The slide 26 is maintained in its ditlerent positions ot adjustment byengagement oit a detent spring 29 with depressions 3() in the slide 26,this spring extending from a hearing 81, upon which the slide 26 isslidably supported Said bearing 31 also forms a pivot 'for the usualratchet-detent lever 32, carrying at its end a roller 88, engaging theratchet-teeth.

it will be noted, by reference to ldligure 1, that there is a clearancebetween slide 6 and the pawl 8, and this clearance is maintained byproperly positioning the pins 16 and the depressions in the slide 26, sothat the lig 24 always engages the pin 25, to hold the slide out otcontact with the pawl 8. rlhis provision is important by reason ot thetact that it prevents any trictional Contact between the pawl and theslide during caseshitting operations. The mechanism by whichcase-shitting is performed is not specifically shown, but comprises theusual mechanism for this purpose `found in the Underwood typewriter, itbeing noted that the platen trame 8 is shifted relatively to thecarriage-trame 11, under the control ot the case-shitting mechanism.

Variations may be resorted to within the scope ot the invention, andportions ot the improvements may be used without others.

Having thus described my invention, l claim:

1. ln a line-spacing mechanism for type writers, the combination with aplaten, ot means for moving the platen, comprising a, pawl aline-spacing lever, a pawl-carrier in the path oit movement ot theline-spacing lever to be operated thereby to impart line spacingmovement to the pawl, means acting through the pawl-carrier for settingthe pawl to di'tlerent positions to control the line-spacing movement ofthe platen, and means independent ot the pawl-setting means torarrest-ing said line-spacing lever in various normal positions spaced tocor respond with the setting of said pawl tor diiierent line-spacing'movements oi the platen.

2. In a line-space mechanism Yfor type-- writers, the combination with aline-space lever, ot a slide with which said lever co-l operates, saidslide being unconnected with but in the path ot :movement ot a part ofSti lll)

said lever, a line-space pawl lcar,ljiedfby;said sli'd'e, 'a 'sp rii1'f.;fv urging "s'ail4 slide" and'pafWl toward 'the line' spafeeflevei, afseating;y lever lia-ving a flip, and'. 'av 'steplf .'oarried': 'saidslide and 'engaging' .said.-lip'.'nndeit'aetin of said spring, said`lsetting leven-' movable to different,l positions, 'and' said spring.acting to eansesaid slide to, follow np: 'said A'setti'r'g lever,Wli'ereby' 'said Vvpand' 'is variably' posi.- ti'onedn v p Y 3. In aline-space` mechanism. fotypel Writers, the combination 'with ali'nefspaee lever, of a `slide 'with which said' leverycol operates, aline-spacepawl carried', `by'said slide, 'a springl urging said' slide.and' 'pa'Wl in one direction, a settingf lever having 'ay lip, astopearried'. by' said slide and engaging said' lip under action 'of'saidspring',.sai`d setting lever movable to` di'erent positions, and'sai'd springv acting to cause said. slide'. to follow up saidI settinglever, a "platenf4 ratchet engageable, by ysaid plavvl,v a shelfsupporting` said pa'vvlV 'ont 03E Contact With. said' ratchet' 'when'said' stop" is(y in. 'Contact with said' lip, and' means forconnecting'. rS'faidl shelf for"v 'movement vk-*i'tlns'aidy Settinglever.'

4. In a line-'space me'ch'anism'for'type writers, the eonibinati'on'with'a ,lines'paee lever, of. a slid'efvvith- 'which' 'saidfdeverieoloperates, a line-space pawlfcarried"bygsaid slide, AYa spring.,urgi1ig"said"slide and.' pa'wl' in"l one "direction, a settingle-ve'n-havingY lip', a 'stop'.'e'arried' by `said slide and''enga'gingv said4 lip under' action of spring,

said setting'lever'movable `to di'i'erfent posi-v tions, and sai'dspring actingtov 'causesaid slide to follow up said] setting"-leve'r, aplaten-ratchet 'engageab'le by said pa'wl, a shelf'supporting" saidipa'Wl ont 'of ,Contact Witli said ratohet'when 'said'stop' 'is in ycon?Vtaet 'With said lip, 'means for" con'n'eeting"v 's 'aidl shelffoiffmo'vement with 'said I'setting lever,` and means foi-'stopping'said' linespaeelever in^"norinal" positions' correspondin' .lto'jthe'differentpositions' off said; 'setting: y 'ev'eri' 5. In a typevvritingfnaehinega carriage," a platen sliii'talble` "to I enable'v`,upper-'ea,se `v characters "to: be printed," a platen-rat'ohet,5 apavvl yfor actuating'said ratehe't,fmeans'}for predetermining theamount'of movement lof the 'paWl` to" 'actu'ate the, ra\tehet ay line?sp'a'cing vleve'r monnted on the Carriage', andi means'for'varyin'g theamount ofin'vement' of' said' line-spacing.' Alever to' corresponde withthe predetermined 'amount' 'of move`V ment 'of'said paWL' said' first"means beingA independent of` said'latterlne'an'sv and' mov'- ablerelativelythereto in the case-shifting movement of' the' platen."

6"-III' rva typewriting "mael'rifle7 a pltet Sh'ftabl' t0''Causeupnericase characters to be'print'ed,"a line-spacing pa'wl','means for controlling' saidpa'w'l so that it 'moves from' dii'erentpredetermined normal positions to a definite positiomfalmeffs'paeingfllevenja pavvl;ear-.rien` -uneonneetedi With,b1 1t in.the. path! of' movement' of., theline-fspain-g lever, tof'be' operated..thereby,... to.. im]g` art line.- spaeing' movement 'to the DaWl', the`paWl-earrier and. line-spacingj .f-leverff being relatively. movable'inf'k the' oase-shifting movement of.' the platen', and' means.- to'Eset the' extent ef? movement.' of' the." line-spacing level" toiCorrespond. in. spaeedfrelation' with th'e'movement. of'ithelpa'wl'. y v7. ln.. a. typ'eWrfiti'n'g :maeliine,I a carriage,y alinerspaeing",'leven'mountedf on. thev ear-f riage.,' means'. on. theCarriage `for adjustably lin'iitling the stroke 'of the i line-spacing'lever,l a platen mounted onv the carriageland shift" able relatively.thereto to permit upper-ease elia1"'at`oters.Y to be f printed,line-spacing meohanism 'operated' by said" lever, but shiftablerelatively thereto With the platen, com-V pr'ising'a pl'atenfratohenapavvlffor operatin'g" thel ratehet,"andl "a palvyl-oarrierh and' meansshiftable Wi'th'tl'i'e.V platen.v forl adjusting 'the 'positionfo thepalvvvlleearnier in. a; corresponding' i, spaced'.A relation-1 `With fthe l`er`gjtjlY ,ofiis'trok'e' off' the' lin'es'pacing lever.

, ,8; AI'n a ty'peWriting niaehinegla rcarriage,.a line-spacing" lever.4mounted.' on'. thefearriage; a pltenframe"mounted' rnthe.7 earriagelan'd sli'i'ftablerelatively 'theret'e to permit upper-f case''characters te bef'pninted a; .platen, linee spacing '.meehan'i's'm'loperated vby ofthe?- li'ne.-k

spacing" lever, but 'shiftable relatively theret'o with..the"platenycomprigf e Slidel and;

sep' arabe",y means on lthe carriage.' and.l on the. platenlfr'ame! for.adjnstin'g'f respectively the range of?, movement.' 'of' the.'linespaeilng` 4lever "and" the 'rangeffof movement of.' the' slide to?correspond infspaeed relation `one :'Witlr the'ethjgr: l, i a I y 9.'aflinespaoe" mechanism `for. {type- Writ'in Shiayohine'a'. the,'combination with. 'a ltranie'fand'. a ',platenframe, of means on'shifting .said yplaten-trarne rela, tively to sa-id'. Voarrfi'agefraniebetween, upper pds'iti'ning? said sli'd'e vto effect d'iiierentv 'de-f'grees of" linelspapingf fa `line-spate lever mounted` on said.eatriage-f',frame, fori engagmg` anal actuating, said'. slide., andmeansfor arresting said' ,leverin various normalA po.- sltl'nsspacedt'ojcorrespondewith the .various ,y positions' bij thel slide,saidlever and' l slide being` 'maintained' lout ofy Contact witheachotle'rlvvzlien the! line-space lever is in anyl` one fitsnormal.positions. i v 1 0; In!` a ltypevvri.ting' .machine7 l'a platenshiftablel togpe'rmit..upperfease. eharacters-` tov relatively'thei'eto'inj the ease-shifting movef4 ment of the platen,l and `meansforcoc-ondina'tely adjnsti'ngitlie ranges of. movement ofsai'd'membersfto'vary the extent eflltlieglineef lao.

spacing movement of the platen to correspond in spaced relation with oneanother and prevent lost motion between the membersB ll. Line-spacingmechanism for the platen of a typewriting machine, having, incombination, a line-spacing finger-piece, a ratchet connected with theplaten, a pawl engageable with the ratchet, a pawl-carrier unconnectedwith but in the path of movement of the linger-piece to be engaged andoperated thereby to line-space the platen, a spring for returning thepavvl-carrier towards the linger-piece, a stop-device settable in thepath of the return movement of the finger-piece to `vary the extent ofsuch return movement for correspondingly varying the line-spacing of theplaten, and a settable stop-device for variably limiting the returnmovement of the pawlv-carrier to correspond with the extent of thereturn movement of the finger-piece as determined by the settablestop-device therefor.

l2. In a front-strike typewriting machine, in combination, a carriage, aplaten-frame shiftable on the carriage between upper and lower casepositions, a line-spacing fingerpiece movably mounted on the carriage,means connected to the platen including a line-space slide on theplaten-frame unconnected with but in the path of movement of thefinger-piece to be engaged and operated thereby to line-space theplaten, a stop-device settable in the path of the return movement of thefinger-piece for variably limiting such return movement so as tocorrespondingly vary the line-spacing of the platen, a spring forreturning the slide towards the finger-piece, and a stop-device settablein the path of the kreturn movement of the slide for variably limitingsuch return movement to correspond with the extent of the returnmovement of the fingerpiece as determined by the settable stopdevicetherefor, and so as to provide clearance between the returned slide andthe returned nger-piece in their various correspondingly returnedpositions.

13. Line-spacing mechanism for the platen of a typewriting machine,having, in combination, a pivotedline-space lever having a lever-armforming a finger-piece, and a stop-device settable in the path ofmovement of said lever-arm to vary the extent of line-spacing movementof the line-space lever for correspondingly varying the linespacing ofthe platen: said stop-device comprising a rotatable shaft extendingtransversely to said lever-arm, and a stop-pin projecting from the shaftand movable into or out of the path of movement of the lever-arm byrotating the shaft.

' 14'. Line-spacing mechanism for.y the platen of a typewriting machine,having, in combinatioma pivoted line-space lever hav- Moenia ing alever-arm forming a finger-piece, and a stop-device settable in the pathof movement of said lever-arm to vary the extent of line-spacingmovement of the line-space le-l ver for correspondingly varying thelinespacing of the platen; said stop-device comprising a rotatable shaftextending transversely to said lever-arm, and a plurality of stop-pinslongitudinally and angularly spaced on the shaft and movable selectivelyby the rotation of the shaft into or out of the path of movement of saidlever-arm.

l5. Line-spacing mechanism for the platen of a typewriting machine,having, in combination, a pivoted line-space lever having a lever-armforming a finger-piece, and a stop-device settable in the path ofmovement of said lever-arm to vary the extent of line-spacing movementof the linespace lever for correspondingly varying the line-spacing ofthe platen: said stop-device comprising a rotatable shaft extendingtransversely to saidv lever-arm, a stop-pin projecting from the shaftand movable into or outof the pathof movement of the lever-arm byrotating the shaft, and a detentdevice for detaining the pin-carryingshaft at its different rotative positions.

16. Line-spacing mechanism for the platen of a typewriting machine,havin@` in combination, a pivoted line-space lever having a lever-armforming a finger-piece, and a stop-device settable in the path ofmovement of said lever-arm to vary the extent of line-spacing movementof the linespace lever for correspondingly varying the line-spacing ofthe platen; said sto-p-device comprising a rotatable shaft extendingtransverselyl to said lever-arm, a plurality of stop-pins longitudinallyand angularly spaced on the shaft and movable selectively by therotation of the shaft into or out of the path of movement of saidlever-arm, and a detent-device for detaining the pin-carrying shaft atits different rotative positions,

17. Line-spacing mechanism for the platen of a typewriting machine,having, in combina-tion, a pivoted line-space lever having a lever-armforming a finger-piece, a stop-device settable in the path of the returnmovement of said lever-arm to vary the extent of the return movemnt ofthe line-space lever for correspondingly varying the line-spacing` ofthe platen, a linespa'ce slide unconnected with but in the path ofmovement of the line-space lever to be engaged and operated thereby toline-space the platen, a spring for returning the slide towards theline-space lever, and a stop-device settable in the path of the returnmovement of the slide to vary the extent of such return movement tocorrespond with the extent of the return movement of the linespace leveras determined by the settable stop-device therefor; said stop-device forthe line-space lever comprising a rotatable shaft extending transverselyto said leverarm, a plurality of stop-pins longitudinally and angularlyspaced on the shaft and movable selectively by the rotation of the shaftinto or out of the path of the return movement of said lever-arm of theline-space lever, and a detent clevioe for detaining the vpin-earryingshaft et its different rotative positions.

CGRNELIUS B. CORCORAN. TWitnesses:

EDITH B. LIBBY,

JENNIE P. THORNE.`

